| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 723784 |
2023-04-14T09:59:41 Z |
Johann |
Colors (BOI20_colors) |
C++14 |
|
1 ms |
312 KB |
#include "bits/stdc++.h"
using namespace std;
typedef vector<int> vi;
typedef vector<vi> vvi;
#define sz(x) (int)(x).size()
vi queries;
vi ans;
int query(int i)
{
queries.push_back(i);
cout << "? " << i << endl;
int a;
cin >> a;
ans.push_back(a);
return a;
}
void answer(int i)
{
cout << "= " << i << endl;
}
int main()
{
ios::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int N;
cin >> N;
int l = 1, r = N;
while (r - l > 60)
l += 30, r -= 30;
if (r - l > 30)
l += 30;
double center = (l + r) / (double)2;
int len = r - l;
int a = 0;
query(l);
a = query(r);
while (a == 0 && len < N - 1)
{
len += 30;
int last = queries.back();
int next = last;
if (last < center)
next += len;
else
next -= len;
a = query(next);
}
if (a == 0)
answer(N);
else
{
int lowerB = max(1, len - 30);
while (a == 1 && len > lowerB)
{
len -= 1;
int last = queries.back();
int next = last;
if (last < center)
next += len;
else
next -= len;
a = query(next);
}
if (a == 0)
answer(len + 1);
else
answer(len);
}
return 0;
};
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
208 KB |
OK (5 queries) |
| 2 |
Correct |
1 ms |
208 KB |
OK (7 queries) |
| 3 |
Correct |
0 ms |
208 KB |
OK (10 queries) |
| 4 |
Correct |
1 ms |
208 KB |
OK (26 queries) |
| 5 |
Correct |
1 ms |
208 KB |
OK (13 queries) |
| 6 |
Correct |
1 ms |
208 KB |
OK (27 queries) |
| 7 |
Correct |
1 ms |
208 KB |
OK (18 queries) |
| 8 |
Correct |
1 ms |
312 KB |
OK (8 queries) |
| 9 |
Correct |
1 ms |
208 KB |
OK (10 queries) |
| 10 |
Correct |
1 ms |
208 KB |
OK (11 queries) |
| 11 |
Correct |
1 ms |
208 KB |
OK (4 queries) |
| 12 |
Correct |
1 ms |
208 KB |
OK (5 queries) |
| 13 |
Correct |
1 ms |
208 KB |
OK (12 queries) |
| 14 |
Runtime error |
1 ms |
208 KB |
Execution killed with signal 13 |
| 15 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
208 KB |
OK (5 queries) |
| 2 |
Correct |
1 ms |
208 KB |
OK (7 queries) |
| 3 |
Correct |
0 ms |
208 KB |
OK (10 queries) |
| 4 |
Correct |
1 ms |
208 KB |
OK (26 queries) |
| 5 |
Correct |
1 ms |
208 KB |
OK (13 queries) |
| 6 |
Correct |
1 ms |
208 KB |
OK (27 queries) |
| 7 |
Correct |
1 ms |
208 KB |
OK (18 queries) |
| 8 |
Correct |
1 ms |
312 KB |
OK (8 queries) |
| 9 |
Correct |
1 ms |
208 KB |
OK (10 queries) |
| 10 |
Correct |
1 ms |
208 KB |
OK (11 queries) |
| 11 |
Correct |
1 ms |
208 KB |
OK (4 queries) |
| 12 |
Correct |
1 ms |
208 KB |
OK (5 queries) |
| 13 |
Correct |
1 ms |
208 KB |
OK (12 queries) |
| 14 |
Runtime error |
1 ms |
208 KB |
Execution killed with signal 13 |
| 15 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
208 KB |
OK (5 queries) |
| 2 |
Correct |
1 ms |
208 KB |
OK (7 queries) |
| 3 |
Correct |
0 ms |
208 KB |
OK (10 queries) |
| 4 |
Correct |
1 ms |
208 KB |
OK (26 queries) |
| 5 |
Correct |
1 ms |
208 KB |
OK (13 queries) |
| 6 |
Correct |
1 ms |
208 KB |
OK (27 queries) |
| 7 |
Correct |
1 ms |
208 KB |
OK (18 queries) |
| 8 |
Correct |
1 ms |
312 KB |
OK (8 queries) |
| 9 |
Correct |
1 ms |
208 KB |
OK (10 queries) |
| 10 |
Correct |
1 ms |
208 KB |
OK (11 queries) |
| 11 |
Correct |
1 ms |
208 KB |
OK (4 queries) |
| 12 |
Correct |
1 ms |
208 KB |
OK (5 queries) |
| 13 |
Correct |
1 ms |
208 KB |
OK (12 queries) |
| 14 |
Runtime error |
1 ms |
208 KB |
Execution killed with signal 13 |
| 15 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
208 KB |
OK (5 queries) |
| 2 |
Correct |
1 ms |
208 KB |
OK (7 queries) |
| 3 |
Correct |
0 ms |
208 KB |
OK (10 queries) |
| 4 |
Correct |
1 ms |
208 KB |
OK (26 queries) |
| 5 |
Correct |
1 ms |
208 KB |
OK (13 queries) |
| 6 |
Correct |
1 ms |
208 KB |
OK (27 queries) |
| 7 |
Correct |
1 ms |
208 KB |
OK (18 queries) |
| 8 |
Correct |
1 ms |
312 KB |
OK (8 queries) |
| 9 |
Correct |
1 ms |
208 KB |
OK (10 queries) |
| 10 |
Correct |
1 ms |
208 KB |
OK (11 queries) |
| 11 |
Correct |
1 ms |
208 KB |
OK (4 queries) |
| 12 |
Correct |
1 ms |
208 KB |
OK (5 queries) |
| 13 |
Correct |
1 ms |
208 KB |
OK (12 queries) |
| 14 |
Runtime error |
1 ms |
208 KB |
Execution killed with signal 13 |
| 15 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
208 KB |
OK (5 queries) |
| 2 |
Correct |
1 ms |
208 KB |
OK (7 queries) |
| 3 |
Correct |
0 ms |
208 KB |
OK (10 queries) |
| 4 |
Correct |
1 ms |
208 KB |
OK (26 queries) |
| 5 |
Correct |
1 ms |
208 KB |
OK (13 queries) |
| 6 |
Correct |
1 ms |
208 KB |
OK (27 queries) |
| 7 |
Correct |
1 ms |
208 KB |
OK (18 queries) |
| 8 |
Correct |
1 ms |
312 KB |
OK (8 queries) |
| 9 |
Correct |
1 ms |
208 KB |
OK (10 queries) |
| 10 |
Correct |
1 ms |
208 KB |
OK (11 queries) |
| 11 |
Correct |
1 ms |
208 KB |
OK (4 queries) |
| 12 |
Correct |
1 ms |
208 KB |
OK (5 queries) |
| 13 |
Correct |
1 ms |
208 KB |
OK (12 queries) |
| 14 |
Runtime error |
1 ms |
208 KB |
Execution killed with signal 13 |
| 15 |
Halted |
0 ms |
0 KB |
- |
